Dynasties are series of rulers from the same family. Power is passed from one generation to the next. Dynasties can last for many years or even centuries.

In ancient China, dynasties such as the Han and Ming ruled for long periods and developed systems of government and culture. Ancient Egypt also had dynasties of pharaohs who ruled along the Nile. Leadership often stayed within royal families.

Dynasties are studied in history to understand periods of rule. They are identified through records, timelines, and royal family lines.